+void
+Butler::empty_pool_trash ()
+{
+ /* look in the trash, deleting empty pools until we come to one that is not empty */
+
+ RingBuffer<CrossThreadPool*>::rw_vector vec;
+ pool_trash.get_read_vector (&vec);
+
+ guint deleted = 0;
+
+ for (int i = 0; i < 2; ++i) {
+ for (guint j = 0; j < vec.len[i]; ++j) {
+ if (vec.buf[i][j]->empty()) {
+ delete vec.buf[i][j];
+ ++deleted;
+ } else {
+ /* found a non-empty pool, so stop deleting */
+ if (deleted) {
+ pool_trash.increment_read_idx (deleted);
+ }
+ return;
+ }
+ }
+ }
+
+ if (deleted) {
+ pool_trash.increment_read_idx (deleted);
+ }
+}
+
+void
+Butler::drop_references ()
+{
+ SessionEvent::pool->set_trash (0);
+}
+
+